Not a fan, I'm afraid. The tone isn't terrible, but it is spotty at places (especially whenever the researchers talk- something like "holy shit!" probably shouldn't be used in a serious document). In addition, the chamber is very large for no discernible reason, the additional effect feels tacked on, the object is a clear safe without it (the base makes it utterly harmless) and you shouldn't make notes on the object class regardless.

Mostly Importantly, however, is the fact that the main effect isn't terribly interesting. It's simply an object that kills you in a vaguely horrible way. There's no theme here, no substance to anything. SCP articles are stories, first and foremost, and as such they should be interesting before anything else.

Keep at it, though. There's no need to rush things (and since you've been a member for only 15 hours or so, I suspect you did), but your writing isn't bad, and it could get better with practice.

You're both quite right, thank you, I did not realize how large 1km^3 was :P. As for the lack of a story, I have now rewritten most of the article and it's very different. If anyone would like to take a look I'd be very grateful. :)

I don't get why cubical rooms are so popular. When measurements are given for containment procedures, it means that those measurements are significant. I see no reason why the room it is in has to be ten meters to a side; in fact that seems outright excessive.

Aside from that, the tone just feels off and the idea is ultimately really boring. Blood, like many other things, is a cheap thrill; yeah, blood is creepy and things that feeds on your blood are creepy, but it's just not that interesting or thought-provoking.

Actually, the 10x10x10 room was residual from a previous incarnation of this article and isn't significant anymore. I'll update it to have a smaller containment cell.

It's not really supposed to be a cheap thrill (in fact, the reason behind it is because I actually really like blood) and perhaps I'm being too subtle (even with the pun in the title and the new addendum) but the point of the article is that SCP-XXXX is misunderstood and loves blood, not like om nom nom love but love love. It doesn't understand humanity and it doesn't understand that in most cases, communicating with blood is going to involve harming people.

If there's any way that you think I can make this clearer and less boring please let me know.

1. I'm not having issue with the size of the vault. I'm having issue with why you need a vault of any particular size. There are SCPs that require 10 meter wide rooms because they have an area of effect with a 5 meter radius. That's proper justification for a room of a specific size, and I see no such justification. If your SCP has no specific range requirements, then simply put it into a secure locker and be done with it.

2. When I say "blood is a cheap thrill", I do so because anything that affects or is composed of blood is automatically creepy by nature of what it is. You have to make it far more interesting than just, "Oh my God it can manipulate your blood and kill you!"

Edit: For further clarification, gore and death are cheap thrills because while something that can easily kill you is scary, the scare factor easily wears off unless it does so in a particularly novel, interesting, or horrific way. Blood is a cheap thrill because blood is essential to life; anything that screws with our blood is 'scary', but that will quickly wear off unless you make it interesting.